From nobody Sun Feb 8 22:59:36 2026 Received: from mout-p-202.mailbox.org (mout-p-202.mailbox.org [80.241.56.172]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7C0BE2D0C97; Mon, 12 Jan 2026 23:47:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.241.56.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768261660; cv=none; b=qwITmNgaSbGjjLHvySsNv62VEGu3byRDBZ46/ojMLPJ4uJB2iCZb7SlY/evDBB3PD+Q+4U/bQqnlGi16vr5LPSee7RdxqWIoXOC3BbTCu6gYElbd2q9YtXwu6mFbVCEAnarh3VDhr8OfqYdGvc7x+M/PN7OkBSGfdV4s/VUq6OU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768261660; c=relaxed/simple; bh=EILNgy0nCMNPqLiz3IlA9A2k1Sa3UtFHOYQdkWl5/BQ=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=SQE7gK99cHsu0Y8jYhcqSEf6zBBMPMEMedXQMvvAUe3WX51puY3iCEYq9yihkubOIliORoBae5EyFd6bis5lpMpgCC5BJ0sUPziHnHEDhBnFbLlEBC7td1uRXPWPZ9BqfesKo9mNpC16nf2Jbwtgujsjz8wpMqQTd4qruXvKUQ8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=mailbox.org; spf=pass smtp.mailfrom=mailbox.org; dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b=PQeG/IGz; dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b=MCeBaY4P; arc=none smtp.client-ip=80.241.56.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=mailbox.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mailbox.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b="PQeG/IGz"; dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b="MCeBaY4P" Received: from smtp102.mailbox.org (smtp102.mailbox.org [IPv6:2001:67c:2050:b231:465::102]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-202.mailbox.org (Postfix) with ESMTPS id 4dqpvn6Bpdz9spG; Tue, 13 Jan 2026 00:47:33 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1768261653; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=x9QnIHcy9lfGs1gQswZ4b0k66USbs6ylyNIYU06/No8=; b=PQeG/IGzDbLlAss3QKaMM5ZsVvpvx9JzpsNgcRvDYs1UxKC2Ij2XyrRYS8sE5HSaF17kor fh4EFIeDcUpMdqEYCTL+64LWexNwlbglyyEb2kvgTAevAxxDREIpcxkaWnuFFj7sarDJ6B D3BWXUwZ7YFUzmixQqiMuJ+TJB0y9h3GI2mUmc/b0vd7f4AxjD7VwlKvA03DgcnQYGMj7K PeO0CoLfHGLKiCRiRfQnZWr1siVik0X/+ZUF+Xw3cW/GJ5n6Cvty+dr12XQomV4WqkGPaw YM76AO1VF+z8BD/8a7eJHPWt+CXm1+yprdnKdl9BQDscYYM5a9iW8Yi0XU/ESQ== Authentication-Results: outgoing_mbo_mout; dkim=pass header.d=mailbox.org header.s=mail20150812 header.b=MCeBaY4P; spf=pass (outgoing_mbo_mout: domain of marek.vasut+renesas@mailbox.org designates 2001:67c:2050:b231:465::102 as permitted sender) smtp.mailfrom=marek.vasut+renesas@mailbox.org From: Marek Vasut DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1768261651; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=x9QnIHcy9lfGs1gQswZ4b0k66USbs6ylyNIYU06/No8=; b=MCeBaY4PsRtpJL155OyhsWGg0T8tQse+c0Zpq29ExPBwFpNKSZsY0eeI/dJOXhbjPicJij bS45LwDcZcIJQjFDkzUq4j4HQIRGlDauLMgqTbvOWIxS4ptIuE+9Zk2Ym7neyU+gCNWSUJ UkXWjtAfbU1jRFY0k9hAKTOPujukxvDmm8cJGYPJO8/2u2KmFgoGy/9wjn3hmZgrFkqCUF bdilDWl/RIlcF7nRHtLy63SupxNa1XbekaPYHQaxIUVyG+dLQxxy6uwFuqxuDgc4oiAjfG lbaQi1iG3WqnOks+lJBLFZv/Epn/CVY5QtaYi3Jics4oh/QbKkacJE/z1a8V6w== To: dri-devel@lists.freedesktop.org Cc: Marek Vasut , Andrzej Hajda , David Airlie , Jernej Skrabec , Jonas Karlman , Laurent Pinchart , Maarten Lankhorst , Maxime Ripard , Neil Armstrong , Robert Foss , Simona Vetter , Thomas Zimmermann , linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org Subject: [PATCH] drm/bridge: waveshare-dsi: Register and attach our DSI device at probe Date: Tue, 13 Jan 2026 00:47:04 +0100 Message-ID: <20260112234726.226092-1-marek.vasut+renesas@mailbox.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-MBO-RS-ID: 104cfbf733fd29d990d X-MBO-RS-META: ha7yithpydmaw3hbf7dqxjypeexxkbf1 X-Rspamd-Queue-Id: 4dqpvn6Bpdz9spG Content-Type: text/plain; charset="utf-8" In order to avoid any probe ordering issue, the best practice is to move the secondary MIPI-DSI device registration and attachment to the MIPI-DSI host at probe time. Signed-off-by: Marek Vasut Reviewed-by: Luca Ceresoli --- Note that this is similar to e.g. commit 6ef7ee48765f ("drm/bridge: sn65dsi83: Register and attach our DSI device at= probe") and pretty much what every other DSI-to-DPI bridge does. --- Cc: Andrzej Hajda Cc: David Airlie Cc: Jernej Skrabec Cc: Jonas Karlman Cc: Laurent Pinchart Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Neil Armstrong Cc: Robert Foss Cc: Simona Vetter Cc: Thomas Zimmermann Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org --- drivers/gpu/drm/bridge/waveshare-dsi.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/drivers/gpu/drm/bridge/waveshare-dsi.c b/drivers/gpu/drm/bridg= e/waveshare-dsi.c index 43f4e7412d722..9254446f54958 100644 --- a/drivers/gpu/drm/bridge/waveshare-dsi.c +++ b/drivers/gpu/drm/bridge/waveshare-dsi.c @@ -80,11 +80,6 @@ static int ws_bridge_bridge_attach(struct drm_bridge *br= idge, enum drm_bridge_attach_flags flags) { struct ws_bridge *ws =3D bridge_to_ws_bridge(bridge); - int ret; - - ret =3D ws_bridge_attach_dsi(ws); - if (ret) - return ret; =20 return drm_bridge_attach(encoder, ws->next_bridge, &ws->bridge, flags); @@ -179,7 +174,7 @@ static int ws_bridge_probe(struct i2c_client *i2c) ws->bridge.of_node =3D dev->of_node; devm_drm_bridge_add(dev, &ws->bridge); =20 - return 0; + return ws_bridge_attach_dsi(ws); } =20 static const struct of_device_id ws_bridge_of_ids[] =3D { --=20 2.51.0